Home / 13,666.30-18,869.88-13,448.40

Finding the Fourth Proportional to 13,666.30, 18,869.88 and 13,448.40

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Solution

The fourth proportional to 13,666.30, 18,869.88 and 13,448.40 is: 18,569.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,666.30 : 18,869.88 = 13,448.40 : x
  2. Step 2: Convert to fraction form
    13,666.30/18,869.88 = 13,448.40/x
  3. Step 3: Cross multiply
    13,666.30x = 18,869.88 × 13,448.40
  4. Step 4: Simplify right side
    13,666.30x = 253,769,694.19
  5. Step 5: Solve for x
    x = 253,769,694.19/13,666.30
  6. Step 6: Final answer
    x = 18,569.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.